Speaker
Description
One of the most characteristic features of altermagnets is their non-relativistic alternating spin-split band structures. Though these bands give rise to previously unexpected behavior in altermagnets of a certain symmetry, such as spin-polarized currents, it is the relativistic spin-orbit coupled bands that are the origin of many of the other T-reversal symmetry breaking phenomena of altermagnets, such as the anomalous Hall effect and X-ray magnetic circular dichroism. By combining both cutting-edge and well-established techniques, newly predicted properties of this class may be observed. Here I will present recent experimental developments and results highlighting the ability to not only measure some of these phenomena, but ways in which altermagnetic domains can be controlled and manipulated to aid in their detection.
References
[1] O. J. Amin et al., “Nanoscale imaging and control of altermagnetism in MnTe,” Nature, vol. 636, no. 8042, pp. 348–353, Dec. 2024, https://doi.org/10.1038/s41586-024-08234-x.
[2] A. Hariki et al., “X-Ray Magnetic Circular Dichroism in Altermagnetic $\alpha$-MnTe,” Phys. Rev. Lett., vol. 132, no. 17, Apr. 2024, https://doi.org/10.1103/physrevlett.132.176701.
